<?php

$arr = array(1,2,4,5,6,7);
print_r($arr);
echo "\n----------------------\n";
// 2nd way
$arr2 = array(
        '2_lucknow',
        '2_patna',
        '2_kanpur',
        '2_noida'
      );
print_r($arr2);
echo "\n----------------------\n";
// 3rd way
$arr3 = ['3_lucknow','3_patna','3_kanpur'];
print_r($arr3);
echo "\n----------------------\n";

// 4th way
$arr4[] = '4_lucknow';
$arr4[] = '4_kanpur';
$arr4[] = '4_patna';
$arr4[] = '4_noida';
print_r($arr4);
echo "\n----------------------\n";

